class IdCard {
    private aIdentityCodeCity: any = {
        11: "北京",
        12: "天津",
        13: "河北",
        14: "山西",
        15: "内蒙古",
        21: "辽宁",
        22: "吉林",
        23: "黑龙江 ",
        31: "上海",
        32: "江苏",
        33: "浙江",
        34: "安徽",
        35: "福建",
        36: "江西",
        37: "山东",
        41: "河南",
        42: "湖北 ",
        43: "湖南",
        44: "广东",
        45: "广西",
        46: "海南",
        50: "重庆",
        51: "四川",
        52: "贵州",
        53: "云南",
        54: "西藏 ",
        61: "陕西",
        62: "甘肃",
        63: "青海",
        64: "宁夏",
        65: "新疆",
        71: "台湾",
        81: "香港",
        82: "澳门",
        91: "国外"
    };

    isCardNo(card: string) {
        // 检查号码是否符合规范，包括长度，类型
        const reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/; // 身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X
        return reg.test(card);

    }

    checkProvince(card: string) {
        // 取身份证前两位，校验省份
        const province = card.substr(0, 2);
        if (this.aIdentityCodeCity[province] === undefined) {
            return false;
        }
        return true;
    }

    checkBirthday(card: any) {
        if (!this.isCardNo(card)) return false;
        // 检查生日是否正确，15位以'19'年份来进行补齐。
        const len = card.length;
        const reg: RegExp =
            len === 15
                ? /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/
                : /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
        const cardArr: any[] = card.match(reg);
        // 身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字
        const year = cardArr[2];
        const month = cardArr[3];
        const day = cardArr[4];
        const birthday = new Date(
            `${len === 15 ? "19" : ""}${year}/${month}/${day}`
        );
        return this.verifyBirthday(
            `${len === 15 ? "19" : ""}${year}`,
            month,
            day,
            birthday
        );
    }

    verifyBirthday(year: any, month: any, day: any, birthday: any) {
        // 校验日期 ，15位以'19'年份来进行补齐。
        const now = new Date();
        const now_year = now.getFullYear();
        // 年月日是否合理
        if (
            birthday.getFullYear() === Number(year) &&
            birthday.getMonth() + 1 === Number(month) &&
            birthday.getDate() === Number(day)
        ) {
            // 判断年份的范围（3岁到150岁之间)
            const time = now_year - Number(year);
            return time >= 3 && time <= 150;

        }
        return false;
    }

    checkParity(card: any) {
        // 校验位的检测
        const nCard = this.changeFifteenToEighteen(card); // 15位转18位
        const len = nCard.length;
        let cardTemp = 0;
        let i;
        let valnum;
        if (len === 18) {
            const arrInt = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
            const arrCh = ["1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"];
            for (i = 0; i < 17; i++) {
                cardTemp += nCard.substr(i, 1) * arrInt[i];
            }
            valnum = arrCh[cardTemp % 11];
            return valnum === nCard.substr(17, 1);

        }
        return false;
    }

    changeFifteenToEighteen(card: any) {
        // 15位转18位身份证号
        if (card.length === 15) {
            const arrInt = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
            const arrCh = ["1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"];
            let cardTemp = 0;
            let i;
            card = card.substr(0, 6) + "19" + card.substr(6, card.length - 6);
            for (i = 0; i < 17; i++) {
                cardTemp += card.substr(i, 1) * arrInt[i];
            }
            card += arrCh[cardTemp % 11];
            return card;
        }
        return card;
    }

    // 校验身份证
    identityCodeValid(card: string) {
        return this.isCardNo(card) &&
            this.checkProvince(card) &&
            this.checkBirthday(card);
    }

    encryptIdCard(idCard: any) {
        if (!idCard || typeof idCard !== 'string') {
            throw new Error('无效的身份证号码');
        }

        // 移除所有非数字和X字符
        const cleaned = idCard.replace(/[^0-9X]/gi, '');

        // 验证基本长度
        if (cleaned.length !== 15 && cleaned.length !== 18) {
            throw new Error('身份证号码长度不正确');
        }

        // 加密处理：保留前6位和后4位
        const prefix = cleaned.substring(0, 6);
        const suffix = cleaned.substring(cleaned.length - 4);

        // 根据长度生成不同数量的星号
        const stars = cleaned.length === 15 ? '*******' : '**********';

        return `${prefix}${stars}${suffix}`;
    }
}

export default new IdCard();
